We don't have a biography for Cass yet. Hang in there, or go ahead and contribute one.
Appearances
Doctor Who
Guest cast, played by Emma Campbell-Jones
- Episode S07 Special: The Night of the Doctor (Nov 14, 2013)
Guest cast, played by Sophie Stone
- Episode 9x03: Under the Lake (Oct 3, 2015)
- Episode 9x04: Before the Flood (Oct 10, 2015)